True native is apps written in C/C++ or Rust that are compiled to run without a virtual machine. I haven't seen any webapps faster than native apps.
I have noticed that mobile apps are replicating things like SPA for absolutely no reason, which actually lowers responsiveness. So it might be that. Perhaps there's a shift to writing code faster over performance.
However, I have noticed apps claiming to be "native" when in reality they are web browsers in disguise wrapped around some sort of web app.